Saw-rolling machine.



J. 0. BLACK'WELL. SAW ROLLING MACHi NE. APPLICATION FILED MAR; 21, ""11. i .LQ9U %9L Patented Jan. 7,1919.

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J. 0. BLACKWELL.

SAW ROLLING MACHINE. APPLICATION rim) MAR. 21, ms. 1,290,491 Patentedlan. 7; 1919. t

3 SHEETSw-SHEET 2- J. 0. BLAGKWELL.

SAW ROLLING MACHINE.

APPLICATION FILED 20,112.21. 1913.

1 90,491 Patented Jan. 7, 1919.

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Tonill whom a may concern:

. "Beitknownfthat'l, Jenn O. Btaoigwnnn, a citizen'of the United States, reslding at Fordyce, in the countyof Dallas and State ofArkansas, have invented certain new and usefullmprove'lnents' in Saw Rolling Ma- Fig; 2.

chines of which the following is a specifica tion.}."..

ll hisinvention' relates to the manufacture of saws and'hals 'special reference to a saw stretching and 'tensioning machine.

jlinthe course of the manufacture of saws for saw-mill purposes a' wel1known fact that annealing and tempering processes an the construction otm'rcular' saws set up I strains in ttatody or t e saw thatare unis not only dangerpfiracture due to such shape.

rected in the other by meansof hammering at the proper-"points to produce such cor- "rection. In the caseot band saws it is common to roll such saws between a pair of "equal 'atdifierent' places and that thus there rollers pressed one toward'the other.

The object of the present inventionis to provide "a new and improved machine wherein circularsaws maybe rolled In a I manner analogous to the present method of rolling bandsaws.

Another feature of the machine is the provision of. means in the construction wherebythesaw itself will constitute, while being rolled, oneof the friction gears of a gear train so arranged that the action of the rollers may be gradually shifted between the eye andthe periphery of the saw automatically. p

In carrying out the objects of this invention, andwith the above and other objects in view, as will be hereinafter apparent the invention consists in general of certain novel details otconstruction and combinations of parts hereinafter fully described, illustrated in the accompanying drawing, and specifically claimed.

In the accompanying drawing, like characters' of reference indicate like parts inthe several views, and

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Specification of letters Patent.

saw-30mins. MACHINE.

Patented J an. *7

1 Application filed March 21, 1918. Serial No. 223,785.

Figure 1 is a plan view of a saw rolling machlne constructed in accordance withthis invention.

Fig. 2 is a side elevation thereof. Fig. 3 isan end viewthereof. Flg. 4 1s a section on the line of Fig. 5 is an enlarged detail View of a portion of 'the drive Waring for the feed.

Fig. 6 is a section on the line 6-43 of Fig. 5.

Fig. 7 is a detail section on the line 7-7 of Fig. 1. r

Fig. 8' is a section on the line 8-8 of Flgm Fig. 9 isa de'tailview showing a modifination of the roller arrangement.

Fig. 10 is a detail View showing a por tion of a saw and bushingfittedon the saw supporting spindle.

Fig. 11 is a fragmentary transverse Sec-.-

tional View through the saw and its supporting shaft.

In carrying out the objects of this invention in the form herein set forth there is provided a suitable frame which includes,

the bearing: standards 11. Fixedly joun naled in theses'tandards is a shaft 1?)Wl1l0h carries on one end a roller 13 and is provided on its other end with a gear 14 which meshes with a gear 15 fixed on a shaft 16 supported in bearing blocks 17. This shaft isalso provided with a roller'18 coacting with the roller 13. The upper parts of the standards 11 are slotted to receive the bearings 17 and in the inner sides of these slots are provided grooves 19 wherein suitable tongues 20 located on the bearing blocks 17 are operative. On the side of each of the members 11 is a cap 21 which is held in position by screws or bolts 22. Extending through the cap 21 is an adjusting screw 23 provided with a hand Wheel 24 on its outer end and carrying on its innerend a swivel head 25 fitting in a suitable socket in the respective block 17. Now by means of the adjusting screws 23 the roller 18 may be a fast pulley 29, and loose pulleys 'so that shafts 32 and 34 is supported a carriage 35,

the machine may be driven by means of suit able belts, one of the belts being preferably crossed for purposes of reversing.

A standard 31 is for-med on and extends laterally from one of the front standards 11 and this standard has journaled therein a shaft 32 on which is splined a beveled gear 33. Journaled in the bearing standards above and a little to one side of the shaft 32 is a screw-threaded shaft 34 and on the .the shaft 34 passing through a threaded hole in said carriage and the carriage being provided with forwardly extending arms 36 which embrace the gear 33 and slide on the shaft 32. Thus by rotation of the screw 34 the carriage can be caused to travel backward and forward toward the rollers 13 and 18... Extending vertically through this carriage is a shaft 37 which has its upper end reduced as at 38 so as to receive a bushing 39 which is one of an interchangeable series of various diameters to fit the eyes ofthe different saws, one of which is indicated at 40. On the lower end' of the shaft 37 is fixed a bevel gear 41 which constantly.

meshes with the gear 33. On the shaft 32 and screw 34 are fixed gears 42 which mesh each with the other so that the revolution of the shaft 32 will cause revolution of the screw 34. In addition to this a Suitable crank handle 43 is provided on the threaded shaft or screw 34 so that the latter may be turned by hand when desired. Now in the operation of rolling a circular saw it is mounted on the spindle 37 and there secured by means of a nut 44. The periphery of the saw is brought between the rollers 13 and 18', and the rollers 18 are adjusted to give the desired pressure. Supposing it be desired to roll the Saw throughout its extent from the periphery inward, it is then merely necessary to start the machine by shifting the proper belt from a loose pulley 30 to the pulley 29. This through the gears 27, 26, 14 and 15 will drive the rollers 18 and 13 which, clamping the saw between them, will 7 cause the saw to rotate as it is rolled. In

other words the rollers and saw form elements of a friction gearing. Now since the bushing 39 is keyed to the saw and to the spindle 38 by keys 45, rotation of the sawv will rotate the shaft 32. This in turn through the gears 42 will rotate the screw. 34 and cause the carriage 35 to travel to-- treatment it is merely necessary to raise the roller 18 by manipulation of the wheels 24 and then withdraw the carriage 35 by manipulation of the crank handle 43.

While Figs. 1, 2 and 4 disclose rollers having rounded edges yet in some instances it may be advisable to use cone-shaped rollers as indicated at 46 in Fig. 9. It will be obvious that such cone-shaped rollers will require slight changes in .the arrangement of the gearing, bevel gears being substituted for the gears 14 and 15. It is not deemed necessary to illustrate these changes as the sameare common in the art where it is wished to drive shafts which are not parallel.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that many minor changes may be made in the form and construction of the invention without departing from the material principles thereof. It is not therefore desired to confine the invention to the exact form herein shown and described but it is wished to include all such as properlv come within the scope claimed.

Having thus described the invention, what is claimed as new, is: 1. In a machine of the class described, a saw roller arranged to engage and drive a saw, a saw supporting spindle arranged to receive the saw-in fixed relation thereto,

a feeding mechanism driven from said spindle, and means to drive the roller.

2. In a machine of the class described; a pluralitv of saw rollers arranr ed o clasp and drive a saw, means to forcibly move one of said rollers toward the other, means to drive said rollers. a saw supporting spindle arranged to receive and fixedlv hold the saw, and movable to and from the rollers, and a'feed mechanism for effecting movement of and driven from the spindle.

3. In a machine of the class described; a plurality of saw rollers arranged to clasp and drive a saw, means to forcibly move one of said rollers toward the other. means to drive said rollers, a saw supporting spindle arranged to receive and fixedly hold the saw, a carriage movable to and from the rollers and supporting the spindle, a feed screw screwed through said carriage and supported against longitudinal movement, and wearing connecting the feed screw and spindle.

4. In a machine of the class described; a plurality of saw rollers arranged to clasp and drive a saw, means to forcibly move one of said rollers toward the other. means to drive said rollers. a saw supporting spindle arranged to receive and fixedly hold the saw, a carriage movable to and from the rollers and supporting the spindle, a feed screw screwed through said carriage, a rotatable guide shaft on which said carriage second support, a saw rotatably carried by travels, gears connecting the spindle and said second support and adapted for engageguide shaft, and other gears connecting the ment with the roller, a feeding means to guide shaft and screw. carry the saw toward said roller and means 5. In a machine of the class described, to operate the feeding means when the saw a saw roller arranged to engage and drive revolves. a saw, rlneoans t0 dl'ii? the roller-1, a sfupport In testimony whereof I afiix my signature. to revo u 1y carry 't e saw an a eedin mechanism actuated by the revolving sav JOHN BLACKWELL' to move-the support relatively to the roller. 6. In a machine of the class described, a support, a roller carried by said support, a

Witnesses:

W. J. SANDERS, R. L. HORNADAY.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

